Quiz Answer Key and Fun Facts
1. There are 5 animals, A, B, C, D and E. Each animal is either a wolf or a dog. The dogs always speak the truth, and the wolves always speak lies. A says that B is a dog. C says that D is a wolf. E says that A is a dog. B says that C is a wolf. D says that B and E are of different species. How many wolves are there? Write only the number.
2. After you burn down a candle, you get a stub. By using 6 stubs, you can make a new candle. You have 1001 stubs, how many new candles can you make? Write only the number.
3. Joan and Jane are sisters. Jean is Joan's daughter and 12 years younger than her aunt. Joan is twice as old as Jean. Four years ago, Joan was the same age as Jane is now, and Jane was twice as old as her niece was then. How old is Jean? Write only the number.
4. There are two large bottles, one containing 10 litres of orange-juice, and the other containing 10 litres of apple-juice. You pour 1 litre orange-juice to the bottle containing apple-juice, and then you pour 1 litre back to the bottle containing orange-juice. There are plenty of room in both bottles. Will there be more orange-juice in the apple-juice, or more apple-juice in the orange-juice, or will the amount be the same?
5. What's the exact opposite of 'not in'?
6. There's a secret number. It has three digits. The sum of the digits multiplied by 36 equals the number. If you multiply the first digit by 7 and then add 9 you'll get the same as the sum of the two other digits multiplied with 5. If you multiply the second digit with 8 and then subtract 9, you'll get the same as the sum of the first and third digits. What's the number?
7. I'm planting bushes, and I want to plant them in a square. In my first attempt to do this, I saw that I had 39 bushes too many. I then tried to add one row and one column, but then I saw that I had 50 bushes too few. How many bushes did I have? Write only the number.
8. Two boys are standing 20 miles apart. They each have a bike, and begin to drive their bikes at the same time at 10 mph towards each other. The moment they start, a fly sitting on one of the boys nose, begins to fly towards the other boy at 15 mph. The moment it reaches the other boy, it turns and flies back toward the first boy (without losing any speed). When it reaches the first boy, it turns toward the second boy again. The fly keeps this up until the boys meet. What distance did the fly travel? Write only the number.
9. The sum of Eve and Ann's ages is 44. Eve is twice as old as Ann was when Eve was half as old as Ann will be when Ann is three times as old as Eve was when Eve was three times as old as Ann. How old is Eve?
10. The number 48 is special. If you add 1 to this number, you get a square (49=7*7), and if you add 1 to the half of this number, you get 25, also a square (25=5*5). What's the next number you can use this rule on? Write only the number.
Source: Author
mikkemus1
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